#ifndef STRING_H_
#define STRING_H_

char * reverse(char *str);

int strcmp(char *str1, char *str2);

int strlen(char *str);

int esLetra( unsigned char codigo );

int esTeclaDeFuncion( unsigned char codigo );

void intToString(char *buf,int num);

int stringToInt(char *buf);

#endif /* STRING_H_ */
